dfeshiny 0.5.2 update

[rmbielby]

Pull request overview

This updates the template dashboard to use dfeshiny 0.5.2.

Pull request checklist

Please check if your PR fulfills the following:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Tests have been run locally and are passing (shinytest2::test_app())
• Code is styled according to tidyverse styling (checked locally with styler::style_dir() and lintr::lint_dir())

What is the current behaviour?

What is the new behaviour?

Anything else